Patents by Inventor Toshikatu Takeuchi

Toshikatu Takeuchi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Sewing machine
    Patent number: 4381722
    Abstract: In a sewing machine having a presser foot and a pressure imparting member for applying a downward pressure to the presser foot, there is disposed, in an inner chamber of a frame, an oil pump drivingly connected to a main shaft. The oil pump having an inlet port for drawing the oil from an oil reservoir and an outlet port for deliverying the oil under the pressure corresponding to the speed of the main shaft. Also a presser actuating device is provided between the oil pump and the presser foot and designed to apply an additional downward pressure to the presser foot by means of the oil from the outlet port so as to increase the downward pressure of the presser foot.
    Type: Grant
    Filed: May 4, 1981
    Date of Patent: May 3, 1983
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Toshikatu Takeuchi, Kihei Goto, Yasuro Ichihashi, Takenori Kawase